// SPDX-License-Identifier: GPL-2.0-or-later
/*
* msi-ec: MSI laptops' embedded controller driver.
*
* This driver allows various MSI laptops' functionalities to be
* controlled from userspace.
*
* It contains EC memory configurations for different firmware versions
* and exports battery charge thresholds to userspace.
*
* Copyright (C) 2023 Jose Angel Pastrana <japp0005@red.ujaen.es>
* Copyright (C) 2023 Aakash Singh <mail@singhaakash.dev>
* Copyright (C) 2023 Nikita Kravets <teackot@gmail.com>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "msi-ec.h"
#include <acpi/battery.h>
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>
#include <linux/string.h>
#define SM_ECO_NAME "eco"
#define SM_COMFORT_NAME "comfort"
#define SM_SPORT_NAME "sport"
#define SM_TURBO_NAME "turbo"
#define FM_AUTO_NAME "auto"
#define FM_SILENT_NAME "silent"
#define FM_BASIC_NAME "basic"
#define FM_ADVANCED_NAME "advanced"
static const char * const ALLOWED_FW_0[] __initconst = {
"14C1EMS1.012",
"14C1EMS1.101",
"14C1EMS1.102",
NULL
};
static struct msi_ec_conf CONF0 __initdata = {
.allowed_fw = ALLOWED_FW_0,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = 0xbf,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = MSI_EC_ADDR_UNKNOWN, // 0xd5 needs testing
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_BASIC_NAME, 0x4d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0x71,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = 0x89,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = 0x89,
},
.leds = {
.micmute_led_address = 0x2b,
.mute_led_address = 0x2c,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = 0x2c, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xf3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_1[] __initconst = {
"17F2EMS1.103",
"17F2EMS1.104",
"17F2EMS1.106",
"17F2EMS1.107",
NULL
};
static struct msi_ec_conf CONF1 __initdata = {
.allowed_fw = ALLOWED_FW_1,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = 0xbf,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
{ SM_TURBO_NAME, 0xc4 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = MSI_EC_ADDR_UNKNOWN,
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_BASIC_NAME, 0x4d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0x71,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = 0x89,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = 0x89,
},
.leds = {
.micmute_led_address = 0x2b,
.mute_led_address = 0x2c,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = 0x2c, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xf3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_2[] __initconst = {
"1552EMS1.118",
NULL
};
static struct msi_ec_conf CONF2 __initdata = {
.allowed_fw = ALLOWED_FW_2,
.charge_control = {
.address = 0xd7,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = 0xe8,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = 0xeb,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xd4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_BASIC_NAME, 0x4d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0x71,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = 0x89,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = 0x89,
},
.leds = {
.micmute_led_address = 0x2c,
.mute_led_address = 0x2d,
.bit = 1,
},
.kbd_bl = {
.bl_mode_address = 0x2c, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xd3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_3[] __initconst = {
"1592EMS1.111",
NULL
};
static struct msi_ec_conf CONF3 __initdata = {
.allowed_fw = ALLOWED_FW_3,
.charge_control = {
.address = 0xd7,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = 0xe8,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xd2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = 0xeb,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xd4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_BASIC_NAME, 0x4d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0xc9,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = 0x89, // ?
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = 0x89,
},
.leds = {
.micmute_led_address = 0x2b,
.mute_led_address = 0x2c,
.bit = 1,
},
.kbd_bl = {
.bl_mode_address = 0x2c, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xd3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_4[] __initconst = {
"16V4EMS1.114",
NULL
};
static struct msi_ec_conf CONF4 __initdata = {
.allowed_fw = ALLOWED_FW_4,
.charge_control = {
.address = 0xd7,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = MSI_EC_ADDR_UNKNOWN, // supported, but unknown
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xd2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
MSI_EC_MODE_NULL
},
},
.super_battery = { // may be supported, but address is unknown
.address = MSI_EC_ADDR_UNKNOWN,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xd4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68, // needs testing
.rt_fan_speed_address = 0x71, // needs testing
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
},
.leds = {
.micmute_led_address = MSI_EC_ADDR_UNKNOWN,
.mute_led_address = MSI_EC_ADDR_UNKNOWN,
.bit = 1,
},
.kbd_bl = {
.bl_mode_address = MSI_EC_ADDR_UNKNOWN, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = MSI_EC_ADDR_UNSUPP, // 0xd3, not functional
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_5[] __initconst = {
"158LEMS1.103",
"158LEMS1.105",
"158LEMS1.106",
NULL
};
static struct msi_ec_conf CONF5 __initdata = {
.allowed_fw = ALLOWED_FW_5,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = { // todo: reverse
.address = 0xbf,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_TURBO_NAME, 0xc4 },
MSI_EC_MODE_NULL
},
},
.super_battery = { // unsupported?
.address = MSI_EC_ADDR_UNKNOWN,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68, // needs testing
.rt_fan_speed_address = 0x71, // needs testing
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = MSI_EC_ADDR_UNSUPP,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = MSI_EC_ADDR_UNKNOWN,
.rt_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
},
.leds = {
.micmute_led_address = 0x2b,
.mute_led_address = 0x2c,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = MSI_EC_ADDR_UNKNOWN, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = MSI_EC_ADDR_UNSUPP, // 0xf3, not functional
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_6[] __initconst = {
"1542EMS1.102",
"1542EMS1.104",
NULL
};
static struct msi_ec_conf CONF6 __initdata = {
.allowed_fw = ALLOWED_FW_6,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = MSI_EC_ADDR_UNSUPP,
.bit = 1,
},
.fn_super_swap = {
.address = 0xbf, // todo: reverse
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
{ SM_TURBO_NAME, 0xc4 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = 0xd5,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0xc9,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = MSI_EC_ADDR_UNSUPP,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
},
.leds = {
.micmute_led_address = MSI_EC_ADDR_UNSUPP,
.mute_led_address = MSI_EC_ADDR_UNSUPP,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = MSI_EC_ADDR_UNKNOWN, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = MSI_EC_ADDR_UNSUPP, // 0xf3, not functional
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_7[] __initconst = {
"17FKEMS1.108",
"17FKEMS1.109",
"17FKEMS1.10A",
NULL
};
static struct msi_ec_conf CONF7 __initdata = {
.allowed_fw = ALLOWED_FW_7,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = MSI_EC_ADDR_UNSUPP,
.bit = 1,
},
.fn_super_swap = {
.address = 0xbf, // needs testing
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
{ SM_TURBO_NAME, 0xc4 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = MSI_EC_ADDR_UNKNOWN, // 0xd5 but has its own wet of modes
.mask = 0x0f,
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d }, // d may not be relevant
{ FM_SILENT_NAME, 0x1d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0xc9, // needs testing
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = MSI_EC_ADDR_UNSUPP,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = MSI_EC_ADDR_UNKNOWN,
.rt_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
},
.leds = {
.micmute_led_address = MSI_EC_ADDR_UNSUPP,
.mute_led_address = 0x2c,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = MSI_EC_ADDR_UNKNOWN, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xf3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static struct msi_ec_conf *CONFIGS[] __initdata = {
&CONF0,
&CONF1,
&CONF2,
&CONF3,
&CONF4,
&CONF5,
&CONF6,
&CONF7,
NULL
};
static struct msi_ec_conf conf; // current configuration
/*
* Helper functions
*/
static int ec_read_seq(u8 addr, u8 *buf, u8 len)
{
int result;
for (u8 i = 0; i < len; i++) {
result = ec_read(addr + i, buf + i);
if (result < 0)
return result;
}
return 0;
}
static int ec_get_firmware_version(u8 buf[MSI_EC_FW_VERSION_LENGTH + 1])
{
int result;
memset(buf, 0, MSI_EC_FW_VERSION_LENGTH + 1);
result = ec_read_seq(MSI_EC_FW_VERSION_ADDRESS,
buf,
MSI_EC_FW_VERSION_LENGTH);
if (result < 0)
return result;
return MSI_EC_FW_VERSION_LENGTH + 1;
}
/*
* Sysfs power_supply subsystem
*/
static ssize_t charge_control_threshold_show(u8 offset,
struct device *device,
struct device_attribute *attr,
char *buf)
{
u8 rdata;
int result;
result = ec_read(conf.charge_control.address, &rdata);
if (result < 0)
return result;
return sysfs_emit(buf, "%i\n", rdata - offset);
}
static ssize_t charge_control_threshold_store(u8 offset,
struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
u8 wdata;
int result;
result = kstrtou8(buf, 10, &wdata);
if (result < 0)
return result;
wdata += offset;
if (wdata < conf.charge_control.range_min ||
wdata > conf.charge_control.range_max)
return -EINVAL;
result = ec_write(conf.charge_control.address, wdata);
if (result < 0)
return result;
return count;
}
static ssize_t charge_control_start_threshold_show(struct device *device,
struct device_attribute *attr,
char *buf)
{
return charge_control_threshold_show(conf.charge_control.offset_start,
device, attr, buf);
}
static ssize_t charge_control_start_threshold_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
return charge_control_threshold_store(conf.charge_control.offset_start,
dev, attr, buf, count);
}
static ssize_t charge_control_end_threshold_show(struct device *device,
struct device_attribute *attr,
char *buf)
{
return charge_control_threshold_show(conf.charge_control.offset_end,
device, attr, buf);
}
static ssize_t charge_control_end_threshold_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
return charge_control_threshold_store(conf.charge_control.offset_end,
dev, attr, buf, count);
}
static DEVICE_ATTR_RW(charge_control_start_threshold);
static DEVICE_ATTR_RW(charge_control_end_threshold);
static struct attribute *msi_battery_attrs[] = {
&dev_attr_charge_control_start_threshold.attr,
&dev_attr_charge_control_end_threshold.attr,
NULL
};
ATTRIBUTE_GROUPS(msi_battery);
static int msi_battery_add(struct power_supply *battery,
struct acpi_battery_hook *hook)
{
return device_add_groups(&battery->dev, msi_battery_groups);
}
static int msi_battery_remove(struct power_supply *battery,
struct acpi_battery_hook *hook)
{
device_remove_groups(&battery->dev, msi_battery_groups);
return 0;
}
static struct acpi_battery_hook battery_hook = {
.add_battery = msi_battery_add,
.remove_battery = msi_battery_remove,
.name = MSI_EC_DRIVER_NAME,
};
/*
* Module load/unload
*/
static const struct dmi_system_id msi_dmi_table[] __initconst __maybe_unused = {
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
},
},
{}
};
MODULE_DEVICE_TABLE(dmi, msi_dmi_table);
static int __init load_configuration(void)
{
int result;
u8 fw_version[MSI_EC_FW_VERSION_LENGTH + 1];
/* get firmware version */
result = ec_get_firmware_version(fw_version);
if (result < 0)
return result;
/* load the suitable configuration, if exists */
for (int i = 0; CONFIGS[i]; i++) {
if (match_string(CONFIGS[i]->allowed_fw, -1, fw_version) != -EINVAL) {
conf = *CONFIGS[i];
conf.allowed_fw = NULL;
return 0;
}
}
/* config not found */
for (int i = 0; i < MSI_EC_FW_VERSION_LENGTH; i++) {
if (!isgraph(fw_version[i])) {
pr_warn("Unable to find a valid firmware version!\n");
return -EOPNOTSUPP;
}
}
pr_warn("Firmware version is not supported: '%s'\n", fw_version);
return -EOPNOTSUPP;
}
static int __init msi_ec_init(void)
{
int result;
result = load_configuration();
if (result < 0)
return result;
battery_hook_register(&battery_hook);
return 0;
}
static void __exit msi_ec_exit(void)
{
battery_hook_unregister(&battery_hook);
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jose Angel Pastrana <japp0005@red.ujaen.es>");
MODULE_AUTHOR("Aakash Singh <mail@singhaakash.dev>");
MODULE_AUTHOR("Nikita Kravets <teackot@gmail.com>");
MODULE_DESCRIPTION("MSI Embedded Controller");
module_init(msi_ec_init);
module_exit(msi_ec_exit);
